Bill de Blasio on inequality, Eric Garner and his 2020 competitors

Bill de Blasio has been mayor of New York City since 2014. He is one of the latest entrants into the 2020 Democratic presidential contest but has been ramping up his campaign since, delivering one of the most memorable lines at the July debate. Judy Woodruff sits down with de Blasio to discuss running New York, what he thinks of his progressive competitors and his concerns about the party.